Table 2.
Analysis of general characteristics of high-risk patients with non-traumatic acute abdominal pain.
| Variables | Non-high risk (N = 2,113) n (%) | High-risk (N = 358) n (%) | Statistic | p |
|---|---|---|---|---|
| Age | 40.00 (29.00, 56.00) | 53.00 (36.00, 69.00) | Z = −8.53 | <0.001 |
| Time of last meal (hours) | χ2 = 8.05 | 0.005 | ||
| <7.5 | 1,397 (86.99) | 209 (13.01) | ||
| ≥7.5 | 716 (82.77) | 149 (17.23) | ||
| Gender | χ2 = 1.49 | 0.223 | ||
| Male | 983 (84.60) | 179 (15.40) | ||
| Female | 1,130 (86.33) | 179 (13.67) | ||
| Mode of admission | χ2 = 51.15 | <0.001 | ||
| Non-ambulance admission | 2044 (86.61) | 316 (13.39) | ||
| Ambulance admission | 69 (62.16) | 42 (37.84) | ||
| Number of comorbidities | χ2 = 34.34 | <0.001 | ||
| ≤1 | 2059 (86.30) | 327 (13.70) | ||
| ≥2 | 54 (63.53) | 31 (36.47) | ||
| Past medical history | ||||
| Hypertension | 147 (71.71) | 58 (28.29) | χ2 = 34.39 | <0.001 |
| Diabetes | 64 (70.33) | 27 (29.67) | χ2 = 17.58 | <0.001 |
| Cardiovascular disease | 22 (50.00) | 22 (50.00) | χ2 = 45.60 | <0.001 |
| Cerebrovascular disease | 4 (44.44) | 5 (55.56) | χ2 = 9.19 | 0.002 |
| Hyperlipidemia | 7 (70.00) | 3 (30.00) | χ2 = 0.90 | 0.344 |
| Tumor | 48 (67.61) | 23 (32.39) | χ2 = 18.92 | <0.001 |
| Hepatic disease | 9 (69.23) | 4 (30.77) | χ2 = 1.63 | 0.202 |
| Renal disease | 21 (91.30) | 2 (8.70) | χ2 = 0.25 | 0.620 |
| Biliary tract disease | 123 (75.00) | 41 (25.00) | χ2 = 15.67 | <0.001 |
| Pancreatitis | 20 (66.67) | 10 (33.33) | χ2 = 7.23 | 0.007 |
| Intestinal obstruction | 10 (58.82) | 7 (41.18) | χ2 = 7.79 | 0.005 |
| Obstetric history | χ2 = 14.27 | <0.001 | ||
| Male/postmenopausal | 1,305 (83.49) | 258 (16.51) | ||
| No | 704 (89.23) | 85 (10.77) | ||
| Yes | 104 (87.39) | 15 (12.61) | ||
| Menstrual history | χ2 = 11.27 | 0.010 | ||
| Male/postmenopausal | 1,358 (83.88) | 261 (16.12) | ||
| Normal | 691 (88.59) | 89 (11.41) | ||
| Delayed | 54 (87.10) | 8 (12.90) | ||
| Advanced | 10 (100.00) | 0 (0.00) | ||
| Menstrual volume | χ2 = 17.26 | <0.001 | ||
| Male/postmenopausal | 1,342 (83.88) | 258 (16.12) | ||
| Normal | 539 (90.74) | 55 (9.26) | ||
| Abnormal | 232 (83.75) | 45 (16.25) | ||
| Vaginal bleeding | 39 (97.50) | 1 (2.50) | χ2 = 4.72 | 0.030 |
| Abdominal surgery history | 265 (83.07) | 54 (16.93) | χ2 = 1.76 | 0.185 |
| Allergy history | 64 (76.19) | 20 (23.81) | χ2 = 6.10 | 0.014 |
| Medication history | 481 (87.30) | 70 (12.70) | χ2 = 1.82 | 0.177 |
Z, Mann–Whitney test; χ2, Chi-square test; −, Fisher exact; *, Simulated p-value. Bold type indicates p < 0.05.